| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | J C Penney Co Inc | Tenant | 0 |
| 2 | J. P. Morgan AG | Tenant | 1 |
| 3 | J.P. Morgan Advisors, Inc. | Tenant | 3 |
| 4 | Jack in the Box, Inc. | Tenant | 12 |
| 5 | Jackson Walker L.L.P | Tenant | 6 |
| 6 | Jagdish Patel | Tenant | 1 |
| 7 | JAI Investments | Tenant | 3 |
| 8 | James T Cannon, DMD | Tenant | 1 |
| 9 | Jameson Inn | Tenant | 8 |
| 10 | Japan Bank for International Cooperation | Tenant | 1 |
| 11 | Japan Bar Association | Tenant | 1 |
| 12 | Japan Freight Railway Company | Tenant | 1 |
| 13 | Japanisches Generalkonsulat | Tenant | 1 |
| 14 | Jardine Matheson Group | Tenant | 1 |
| 15 | Javad Positioning | Tenant | 0 |
| 16 | JC Penney District Office | Tenant | 0 |
| 17 | Jebel Ali International Hotels | Tenant | 2 |
| 18 | Jefferies & Company | Tenant | 1 |
| 19 | Jenkens & Gilchrist PC | Tenant | 6 |
| 20 | Jewish Association For Residential Care Inc. | Tenant | 0 |